## Features

- Use `_pv` destroy functions to satisfy ASAN checks (#1630).

- Use safe accessor to vector elements (#1633).

## Chore

- Replace `graph.isomorphic()` with `isomorphic()` (#1583, #1623).

## Documentation

- Make documentation of `disjoint_union()` consistent with behavior (#1587, #1641).

- Add central note about experimental functions (#1624).